Insulator



July a, 1928.

O. D. BABINEAU INSULATOR Filed Dec- 1925 gmentoc Oliver DBabineau'Patented July 3, 1928.

UNITED STATES OLIVER DAVID IBABINEAU, 0F MINNEAPOLIS, MINNESOTA.

INSULATOR.

Application filed December 7,1925. Serial No. 73,576.

My invention relates to insulators for use in supporting electricalconductors and parti'cularly tothe type of insulator-in which theconductor or wire is held from movement in a longitudinal direction. Anobjectof the invention resides in providing a structure whereby the wireis firmly supported and is held from movementin either direction. p

Another object of the invention resides in providing an insulatorhavinga body portion forming anv abutment having a depression thereinforreceiving a wire and in provid ing a member pivoted to said bodyportion adapted to engage said wire and wedge the same. against the wallof said depression on either side thereof so as to holdsaid wire fromlongitudinal movement in either direction.

A still further object resides in constructing said body portion andmember so as to form a transverse groove along which a wire may lie, andin providing said member with a hump extending into the depression inthe body portion, said body portion having overhanging protrusions alongsaid groove for holding said wire in place. and the hump on said memberhaving a flange on which said wire rests for holding said member inplace and having a tip extending above said body portion for assistingin mounting the wire on the insulator.

With the foregoing and other objects in view, which will appear in thefollowing description, the invention resides in the novel combinationand arrangement of parts and in the details of construction hereinafterdescribed and claimed.

In the drawing illustrating an embodiment of my invention:

Fig. llis a side elevational view of my improved insulator.

Fig. 2 is a. plan View of the structure shown in Fig. 1.

Fig. 3 is a vertical sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a perspective view of the body portion of the insulator. yFig. 5 is a perspective view of the wedge member of the insulator.

With the ordinary type of insulator used for supporting electricalconductors especially in transmission, telephone and telegraph linesconsiderable time is required in stringing the wire and in attaching itto the insulators. In addition a substantial quan tity of tie wire isused for the purpose. hen a wire is supported in the usual manner,- andthe same breaks. the wire slips along the insulators and sags for anumber of spans to either side of the break, thus causing additionallabor in repairing and frequently producing shorts and cross-circuitingthe lines. My invention overcomes these disadvantages as will becomeapparent.

In the drawings, I have shown an insulator constructed in accordancewith my invention. The device consists of a body portion B which hasmounted on it a member C adapted to operate in conjunction with saidbody portion to support and hold from longitudinal movement a wire 10 aswill be presently explained. The body portion B may be in the form of afrustrum of a cone and is provided with a threaded socket 11 adapted toscrew upon an ordinary insulator pin 12 as illustrated in Fig. 3. Aroundthe lower portion of the body B is provided a skirt 13 which enclosesthe socket 11 protecting the threaded portion of the pin 12 from theweather and at the same time increasing the efficiency of the insulator.

At the top of the bodyportion B is a segnjiental' shaped head 14 whichhas a vertically disposed abutment 15 at right angles to' a horizontallydisposed surface 16 on said body portion. this structure forming arabbet along the upper portion of the insulator. Upon the surface 16 andin said rabbet'is positioned the member C which is also segmentallyshaped and conforms in configuration to the head 14. Member C isarranged with vertically disposed surfaces 17. which face the abutment15 of head 14 and are spaced therefrom. forming there with a transversegroove 18 for the reception of the wire 10. The member C is attached tothe, body portion B by means of a trunnion 19 formed integrallytherewith, which depends from said member and is fitted in a socket- 20.formed in the upper part of the body portion B. By this means, saidmember is pivotally attached to said body portion so that the same mayengage the wire to clamp it in a manner presently to be described. I

The wire 10 is held in place as follows:

Medially of the abutment 15 is formed an arcuate depression 21. Intothis depression extends a curved hump or protuberance 22 which is formedintegral with the member C, being spaced sufiiciently from the wall wardmovement of the wire. protrusions on the member-C thecorner of of saiddepression to permit the wire 10 to pass between said protuberance andwall. In this manner a jogfis formed in the groove 18 which allows thewire 10 to be kinked as indicated at 23.

The device operates as followsz' The l-zinked portion 23 of the wire 10engaging the protuberance 22, causes-the member C to be swung on thetrunnion 19 whenever the said wire is moved longitudinally,

positioned relative to the wall of the depression 21. This causes saidhump to be moved towards either of the sides of the wall of thedepression 21, which in turn forces. the wire 10 against said wall so asto wedge it in place and prevent the further movementthereof in eitherdirection.

To prevent thewire from-becoming accidently disengaged from the groove18, as otherwise might occur at a low pole, the head 14 is providedywithtwo overhanging protrusions 24 and 25 which obstruct the upthe samealongthe surface 17 is beveled as indicated at 26 so that the groove 18 maybe vof substantially the same width through out its upward extent topermit the insertion ofwire 10 into it. After the wire has been strungthe same is prevented from having any; transverse movement through theagency; of the hump 22 which engages the kinked portion 23 ofsaid wireand causes it to lie closely against the abutment 15. In this positionany upward movement of said wire must necessarily be along said'abutment and is hence obstructed by either of the protrusions 2 10i- 25.

In mounting the wire upon the insulator the same, is first insertedbeneath either of the protrusions 24: or 25 as the case might be andslid over the beveled edge 26 of member C and into the groove 18. The

same is next bent around an upwardly projectiiig tip 27 on the hump 22and then back again beneath the other of the protrusions and into saidslot 18. In this manner the kink 23 is formed in the wire 10 whichbecomes lodged between the hump 22 and the wall of the depression 21,said hump serving to wedge the wire in the insulator andobstruct it frommovement in either direction, as prev ously brought out.

;The member C is held in place by means,

of the wire 10 which rests upona flange 28 formed around the lowerportion of the hump 22 and which fits within the depression 21 alongthevbottom of the groove 18. This flange also preventstlie wire fromcreeping under the cornersof the member C.

In the use. of my improved insulator tie wires are'entirely eliminated.The line wire .can be mounted quickly and effectively in the insulator,therebyreducing the time re- I As-will. be noted, the trunnion 19 iseccentrically sion for receiving a wire, a member pivoted Opposite theinchned toward said member near the top quired to string the same. Afterthe linehas been erected the same remains at all times taut and properlysupported between poles and in the event that the wire breaks the linewill not sag atadjacent spans.

Changes in the specific form of my invention, as herein disclosed, maybe made within the scope of what is claimed without de-. parting fromthe spirit of my invention.

I claim: i 75 1'. An insulatorcomprising a body portion having anabutment formed with a depresto said body portion having a hump extend-X ing into said depression to engage a wire therein, said hump extendingabove the body portion and providing a guide for the insertion of thewire between. said body portion and said member, said member beingmovable to clamp'said wireand hold it from longitudinal movement ineither dierection.

y 2. An insulator comprising a body portion having a segmental shapedhead, a supplemental head member pivoted to said body portion adjacentsaid segmental shaped head" and spaced therefrom to form a transversegroove for the reception of a wire, said segmental shaped head having adepression therein, and said complemental head meme her having a humpextending into saidrdepression and engaging said wire, said groovethereof and extending parallel" therewith below the upper portionthereof, said hump projecting above said groove.

3. An insulator comprising a body having a part of the upper top thereofremovedto leave a segmental shaped headand to form rabbet opposite saidhead, a complemental head member of segmental. shape positioned V insaid nbbet adjacent said segmental shaped headand being spaced therefromto form a transverse groove for the reception of a wire,- saidse mentalshaped head havinga de pression therein, and saidcomplemental headmember having a protuberance extending into said depression and engagingsaid wire, a socket formedin said body, and a trunnion formed on saidcomplemental head member fitted within said socket for pivoting saidcomplemontal member on said body portion, said trunnion being disposedso as to throw said protuberance toward thejwall of the depression ateither side thereof upon movement of the complementalhead member andwedge said wire against said wall to hold the wire against movementineither direction. I I t 4. An insulator comprising a body having Lee.a part of the" top thereof removed to leave a segmental shaped head andto form a rabbet offsetting said head with a horizontal and a-verticalsurface, a compleinental head in said rabbet adjacent said segmentalshaped head having a horizontal and a vertical surface, said horizontalsurfaces contacting and said vertical surfaces being spaced to form atransverse groove for the reception of a wire, said segmental shapedhead having a depression in its vertical surface and said complementalhead member having a protuberance on its vertical surface extending intosaid depression and engaging said wire, a socket formed in said body inthe horizontal surface of said rabbet, and a trunnion issuing outwardlyfrom the horizontal surface of said complemental head member fittedwithin said socket for pivoting said complemental member on said bodyportion, said trunnion being disposed so as to throw said protuberancetoward the wall of the depression at either side' thereof upon movementof the complemental head member, and wedge said wire against the wall tohold the wire against movement in either direction.

5. An insulator comprising a body having a part of the top thereofremoved to leave a segmental shaped head and to form a rabbet offsettingsaid head with a horizontal and a vertical surface, a complemental headmember of segmental shape positioned within said rabbet adjacent saidsegmental shaped head having a horizontal and a vertical surface, saidhorizontal surfaces contacting and said vertical surfaces being spacedto form a transverse groove for the reception of a wire, said segmentalshaped head having a curved depression in its vertical surface and saidcomplemental head member having a protuberance on its vertical surfaceextending into said depression and engaging said wire, a socket formedin said body in the horizontal surface of said rabbet, and a trunnionissuing outwardly from the horizontal surface of said complemental headmember fitted within said socket for pivoting said complemental memberon said body portion, the center of curvature of said depression lyingbetween the center of said trunnion and said protuberance, so as tocausesaid protuberance to move toward the wall of said depression ateither side thereof upon movement of the complemental head member uponsaid trunnion as its axis, so as to wedge the wire against said wall andto hold the same from movement in either direction.

6. An insulator comprising a body adapted to support a Wire, said bodyhaving an abutment formed with a. vertical surface, a complementalmember pivoted to said body and having a vertical surface substantiallyparallel with the vertical surface of said body, a depression formed inthe center portion of the vertical surface of said body, a hump formedon the vertical surface of said member and extending into saiddepression, said hump extending above the upper surface of the insulatorand being free above the surface thereof, and overhanging protrusionsformed on the body of the insulator at the upper corners thereof alongsaid vertical surface, said protrusions co-operating with the extendedportion of said hump for guiding and holding a wire within said groove.

7. An insulator comprising a body adapted to support a wire, said bodyhaving an abutment formed with a vertical surface, a complemental memberpivoted to said body and having a vertical surface substantiallyparallel with the vertical surface of said body, a depression formed inthe center portion of the vertical surface of said body, a hump formedon the vertical surface of said member and extending into saiddepression, said hump extending above the upper surface of the insulatorand being free above the surface thereof, and overhanging protrusionsformed on the body of the insulator at the upper corners thereof alongsaid vertical surface, said protrusions extending past said hump andtoward the vertical surface of said member, said member having the uppercorners along the vertical surface thereof removed to maintain saidgroove of substantially the same width throughout its extent, saidprotrusions co-operating with u the extended portion of said hump toguide a wire into said groove and to hold the same therein.

In testimony whereof I have signed my name to this specification.

OLIVER DAVID BABINEAU.

